CVE-2025-6946

What it is

A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the IPS configuration. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management ninterface of another management user.

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-12-04 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-25 23:10 UTC Last updatedMost recent change to the record

Details

Published

2025-12-04 22:15 UTC

Last modified

2026-09-25 23:10 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Modified

Affected

• Watchguard Fireware < 12.11.3
• Watchguard Fireware < 12.5.13

Attack profile CVSS 4.0 · 4.8

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

High

User interaction

Passive

Confidentiality

None

Integrity

None

Availability

None